msmsamarium: gpio: Install display specific gpios

Add new display specific gpios in the list of gpiomux
configure entries. These gpios are needed for different
functionalities of display such as panel enable,
back-light power.

Change-Id: I472b8381ae9483b13caf55191c15532d9661a02d
Signed-off-by: Manoj Rao <manojraj@codeaurora.org>